Milk strainer



Dec. 1a, 1928. 1,695,306"

L. F. WIEMER MILK STRAINER Filed Jan. 12, 1925 INVENTOR.

I L awrence f r/V1 67" er, W 'Y BY W g: M95

Patented Dec. 18., 1928 UNITED STATES LAWRENCE F. WTQEMER, OFBURLINGTON, WISCQNSIN.

MILK STRAINER.

Application filed January 12, .1925. Serial No. 1,896.

The present invention relates to milk strainers for use in connect onwith dairying operations, and it resides in an improved construction inwhich the parts'are reduced to the smallest possible numl'ier, havingdue regard for eiiiciency and the attainment of the best hygienicresults. The invention is comprised in a structure having grallytherewith,

the bottom formed inteso to constitute unit which may be readily "andthoroughly cleansed and sterili. ed and which presents no opportunityfor the lodgz ement of germs in any part thereof. I

The integral bottom of the strainer body .is ierforated for the passageof the milk therethrouglr, and a str mesh fabric 18 arranged upon thesaid bottom. A perforated metallic straining disc is superposed upon thestraining cloth, and the parts are held in assembled posi on by means ofan expansible sprr ring resting upon the perforated disc, the ringengaging a plurality of projections formed as indentations in thevertical side walls of the strainer body, so as to wedge the disc andfirmly clamp the straining cloth against the bottom of the strainerbody.

The specific details of construction will now be described, and thenovelty residing in the invention will be pointed out in the appendedclaims.

In the accompanying; drawing:

Figure 1 is a central vertical sectional view on the line 1-1, Fig. 2,showing the construction and arrangement of the parts forming myimproyed milk strainer.

Fig. 2 is a plan view of the same, some of thd parts being, broken outto show their relative arrangement and proportions In the drawing, thestrainer body A, oi? approximately funnel shape, is composd off a largetubular section 10'at its upper end and a smaller tubular section 11 atits lower end, these tubular sections being connected b y theintermediate tapered section 12. The strainer body is drawn into theformation shown from a sheet of metal so as to form a wholly seamlessstructure with a bottom 13 integral therewith. The construction in theproportions shown and described enables the strainer to be produced witha constricted lower end adapted for ready insertion in the mouth of amilk can, or other receptacle, and at the same time the enlargeddiameter of drawn, seamless tubular inning cloth of line mannerdescribed,

the upper portion provides a desirable reser- V011 capacity forcontaining an appreciable quantity 01' milk while the straining istaking place, and these resu ts are attained without undi'ily increusingthe height of the strainer.

The upper edge of the sheet metal of the strainer body ii oiled or wiredto form a re- Q icad ld and the meeting me of the return-ed edge atevery point of its contact v V K h the outer wall of the section it. issmoothly soldered as at 15, to form a ght circumferential seam whichwill effecvely exclude the entry or lodgement of all ubstances ofwhatever nature. The bottom 13 i perforated as at 16, for the passage ofmilk from tlj-iestrainer. e

The construction described is such that after use may be easily'cleansedand sterilized, by reason of its exposed and wholly smooth surfacesand'the entire absence of any features vhich will permit the lodgementot germs or debris.

1% line-meshed straining cloth 17, conveniently formed as a circularsheet having a di 'ieterwhich approximates that of the c'on trite-ted orneck portion 11, is adapted to be placed over the perforated bottom 15and a perforated metal disc 18 is then positioned upon the strainingcloth. Viewing the drawing', and particularly Fig. 2, itwill be seenthat the perforations in the upper or superposed disc 18, are materiallysmaller than those in the bottom 13 of the straineri so that all i'ce'e'n mat er which despite the most watchtul care in :tind its vay intothe milk to be strained, will be arre d, The primary straini' n of theperforati 1 disc 18 is supplen I the straini on of the cloth 1?, wl asrv strainer will iularcept the mos U oi? such ibreign matter. mill-cpass from the strainer into the receptacle under the same in a state ofabsolute purity. The in in being strained in the will pass freelythrough the larger perfora ions in thebottom 13.

The walls of the constricted portion 11 are indented at a plurality ofpoints on a line about its circumference, so as to form projections 19,which latter extend inwardly otthe t minute particles and so permit the19 isonly such as will permit a spring wire or split ring 20 to enterand fill such space, and in its expansion act with a Wedging action tocause the disc 18 to press the strainer cloth 17 firmlyupon the bottom18 01" the strainer, and prevent disarrangen'ient of the same. lhespring wire ring 20 .is proviifled at its approaching ends withupstanding thumb pieces 21 and 22, which are adapted to be pressedtoward each other to contract the ring, and enable insertion in thespace under the projections 19.

The diameter oi the disc 18 is but a little less than that of theconstricted portion 11. ot the strainer so as to lit closely when placedin position, and in order that the projections 19 may not interfere withthe movement of the disc 18, the latter is provided upon its peripherywith cut out port-ions L3, spaced apart in accordance with thearrangement the said projections. Thus, the e y movement of the discinto and out of pea ion is provid ed for.

litter the conclusion of the straining operation, the resilient ringwill be withdrawn and the straining disc 18 and cloth 1? removed. Thestrainer body A will then be cleansed and sterilized. This action willfree the whole of its smooth surfaces "from adhering matter andconsequently there can be no lodgement of germs on any part thereof. Theremovable elements maybe tr ated in the same manner. The strainingcloths are to be discarded after use. -These latter may be in the formof woven or other textile fabrics, or they may be layers of wedding.

Having thus described my invention, what I claim and desire to secure byLetters Patent oi the United States, is:

1. A milk strainer the body of which comprised of a large upper sectionand a constricted lower section with an integral pertorated bottom andinward projections in the lower section near the bottom constructed as aunit, a straining cloth in closecontact with the whole of and coveringthe inner face oi the said bottom, a perforated straining disc notchedat its peripher 7 'esting' upon the cloth, said projections permit ingmoven'ient of the notched disc thereover, and a spring; loop engz ingunder such projections and causing the disc to press the cloth againstthe bottom. V

2. A mill: strain the body oi which is constituted of a tubular memberreduced at its lower end and provided with an integral perforated bottomand inward projections in the wall of the reduced end constructed as aunit, a perforated straining disc notched at its periphery to permit thedise to pass over the said projections, and a spring loop engaging undersuch projections to cause the disc to press straining cloth against thebottom.

In testimony whereof, I have signed my name at Milwaukee, Wisconsin,this 9th day of December, 1924.

LA /VRENCE F. VIEMER.

